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Fix some porting glitches found by Nelson H. F. Beebe.

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* lib/abitset.c (abitset_resize): Rewrite to avoid warnings from
compilers that don't understand that abort () does not return.
* src/state.c (transitions_to): Likewise.
* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check
that '#include <cstdlib>' works.
* src/system.h (INT8_MIN, INT16_MIN, INT32_MIN, INT8_MAX):
(INT16_MAX, UINT8_MAX, INT32_MAX, UINT16_MAX, UINT32_MAX):
#undef if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901,
for the benefit of some pre-C99 compilers.
This commit is contained in:
Paul Eggert
2006-01-20 01:59:30 +00:00
parent b6e3facf99
commit c21493b89f
5 changed files with 47 additions and 15 deletions
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14
src/state.c
View File

@@ -1,6 +1,7 @@
/* Type definitions for nondeterministic finite state machine for Bison.
Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
@@ -58,10 +59,13 @@ state *
transitions_to (transitions *shifts, symbol_number sym)
{
int j;
for (j = 0; j < shifts->num; j++)
if (TRANSITION_SYMBOL (shifts, j) == sym)
return shifts->states[j];
abort ();
for (j = 0; ; j++)
{
if (shifts->num <= j)
abort ();
if (TRANSITION_SYMBOL (shifts, j) == sym)
return shifts->states[j];
}
}

20
src/system.h
View File

@@ -1,7 +1,7 @@
/* System-dependent definitions for Bison.
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software
Foundation, Inc.
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free
Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -20,6 +20,22 @@
#ifndef BISON_SYSTEM_H
#define BISON_SYSTEM_H
/* flex 2.5.31 gratutiously defines macros like INT8_MIN. But this
runs afoul of pre-C99 compilers that have <inttypes.h> or
<stdint.h>, which are included below if available. It also runs
afoul of pre-C99 compilers that define these macros in <limits.h>. */
#if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
# undef INT8_MIN
# undef INT16_MIN
# undef INT32_MIN
# undef INT8_MAX
# undef INT16_MAX
# undef UINT8_MAX
# undef INT32_MAX
# undef UINT16_MAX
# undef UINT32_MAX
#endif
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>